How to Gap a Spark Plug

Do you know what a spark plug is? Have you ever replaced an old, dirty, or worn out spark plug in an engine? These small parts are crucial to the operation of internal combustion engines. In this science project, you will find out how "gapping" a spark plug affects engine performance. Can you get more power or better fuel economy out of your engine by changing the spark plug gap? Try this project and find out! Read more

If you're interested in object motion and enjoy building things or taking mechanical things apart to see how they work, then it sounds like you'd be interested in mechanical engineering. Read more